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Ulmus pumila

ABSTRACT: Identification of microRNAs and Their Targets in Ulmus pumila under Salt Stress by High-Throughput Sequencing

PROVIDER: PRJNA335709 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR3971172.fastq.gz	Fastqsanger.gz
	SRR3971173.fastq.gz	Fastqsanger.gz
	SRR3971174.fastq.gz	Fastqsanger.gz

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Identification of microRNAs and Their Targets in Ulmus pumila under Salt Stress by High-Throughput Sequencing

Project description:MicroRNAs (miRNAs) are a class of endogenous small RNAs that play important roles in growth, development, and environmental stress response processes in plants. Ulmus pumila is a typical deciduous broadleaved tree species of north temperate, and is widely distributed in central and northern Asia, which has important economic and ecological value. With the spread and aggravate of soil salinisation, salt stress has become a major abiotic stress that highly affects the normal growth and development of U. pumila. However, to date, no investigation into the influence of salt stress on U. pumila miRNAs has been reported. To identify miRNAs and predict their target mRNA genes under salt stress, three small RNA libraries were generated and sequenced from CK (without salt stress), LSS (light salt stress for a short time) and MSL (medium-heavy salt stress for a long time) roots of U. pumila seedlings. Through integrative analysis, 245 conserved miRNAs representing 30 families and 64 novel miRNAs were identified, of which 89 exhibited altered expression level under salt stress, and 232 potential targets for the miRNAs were predicted and annotated in U. pumila. The expressions of six differentially expressed miRNAs were validated by qRT-PCR. These salt responsive miRNAs may play crucial roles in U. pumila defense against salt stress, and our miRNA data provides valuable information regarding further functional analysis of miRNAs involved in salt tolerance of U. pumila and other forest tree species.

2018-12-31 | GSE84937 | GEO

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